Medicare vs. Medicare Advantage — what actually changes?
Both work for many people, but they cost differently and limit you differently. Here is what to weigh before you decide.
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The simplest difference
Original Medicare is the federal program (Part A + Part B) — you can see any provider that accepts Medicare nationwide.
Medicare Advantage (Part C) is a private plan that replaces Original Medicare for the time you are enrolled. Most include drug coverage, dental, vision, and hearing.
The two are not stackable — you are in one or the other.
See our deeper guide on Medicare Supplement plans, which pair with Original Medicare to cover your share of cost.
What changes when you choose Advantage
- Network limits. Most Advantage plans use HMO or PPO networks. Original Medicare does not.
- Prior authorization. Common on Advantage plans; rare on Original Medicare.
- Out-of-pocket cap. Advantage caps your in-network out-of-pocket spending. Original Medicare alone does not (a Supplement plan caps it).
- Extras. Many Advantage plans include dental, vision, hearing, OTC, fitness, transportation. Original Medicare does not.
- Travel. Original Medicare is strong outside your home state. Advantage depends on plan rules.
The right choice depends on your doctors, your prescriptions, and how often you travel. See our comparison framework for a worksheet.
Common mistakes
- Assuming "the plan with extras" must be better — extras vary widely by ZIP.
- Switching to Advantage without checking that current doctors are in-network.
- Not checking the drug formulary on a new plan against your current prescriptions.
Related guides
More plain-language guides from Senior Plan Path.